RU2007654C1 - Hose, method and device for manufacture thereof - Google Patents

Abstract

FIELD: ventilation systems. SUBSTANCE: reinforcing member and band with overlapping edges are spirally wound on mandrel. Band is coated with polymeric material on the width of its overlapping edges. Reinforcing member to be wound is placed on the edge of the last coil on mandrel, and covered with the edge of next coil. Edges are joined by high-frequency welding and hose is removed by applying force to projection formed by reinforcing member. EFFECT: improved functional and operating characteristics. 10 cl, 10 dwg

Description

 The invention relates to a design, method and device for manufacturing a flexible single-layer reinforced sleeve. Such hoses can be used in ventilation, filtration, air conditioning, transportation systems, for protection of lead screws and guides from abrasive dust, etc.

 Known flexible single-layer sleeve, consisting of turns of tape, wound in a spiral with overlapping edges and a spiral reinforcing element located between the edges of adjacent turns of tape.

 There is also known a method of manufacturing a sleeve by spiral winding on the mandrel of the reinforcing element and the tape with the overlapping of its edges having a polymer material deposited on it, their connection and removal of the sleeve from the mandrel.

 A device for manufacturing a sleeve is known, including a tape supply means, a cantilever drive cylinder-conical mandrel, a guiding apparatus tangentially located with respect to the mandrel and having a tray with a groove corresponding to the section of the tape, and a guiding roller, means for connecting and pressing the edges of the tape, at least one pinch roller.

 The aim of the invention in terms of the product is to increase the strength of the sleeve.

 The aim of the invention in terms of the method is to increase productivity and expand technological capabilities.

 The aim of the invention in terms of the device is to improve the quality of the sleeve and expand the technological capabilities of the device.

 This goal in terms of the product of the invention is achieved by the fact that in the sleeve, consisting of turns of tape, wound in a spiral with overlapping edges and a spiral reinforcing element located between the edges of adjacent turns of tape, according to the invention, the tape, at least at the width of the overlap, is made with impregnation with thermoplastic material, and adjacent coils are interconnected by a double helical weld located on the ceiling.

 This design of the sleeve, due to the increased size of the overlap compared to the prototype, which makes it possible to place a double weld on it and due to the edge or the entire tape impregnated with thermoplastic polymeric material, which during welding provides high strength and density of the weld, makes it possible to provide high strength and sleeve density. In addition, the reinforcing element can be made in the form of a strip of polymer material, the cross-sectional area of which is 0.6-1.5 of the cross-sectional area of the tape, and the thickness is 3-8 times the thickness of the tape.

 The use of a reinforcing element in the form of a strip of polymeric material makes it possible to increase the flexibility of the sleeve, reduce its ability to fold (compared to the wire usually used as a reinforcing element), and increase the acid resistance of the sleeve, which is especially important for the sleeves used for ventilation of electroplating shops and other industries using acids. The lower boundary of the indicated size ratios is determined on the basis of ensuring sufficient sleeve stiffness in the radial direction, the upper - on the basis of economy and elimination of excessive sleeve weighting.

 In addition, the reinforcing element can be made in the form of a wire spiral with a wire diameter of 0.8-2.5 mm and an outer diameter of the spiral, which is in the free state 1-1.3 of the outer diameter of the sleeve.

 The boundaries of the ratios for the diameter of the wire are determined similarly to the above for a strip of polymer material, and these ratios for the diameter are determined by the need to provide a small tension of the tape on the one hand to ensure the stability of the sleeve dimensions, and on the other hand, the undesirability of too much tension, which negatively affects the strength of the weld and sleeves in general.

 The width of the reinforcing element, made in the form of a strip of polymer material, may be equal to the width of the overlap. This allows you to minimize the consumption of the tape, but only if the polymer material of which the reinforcing element is made can be welded with a thermoplastic material that is impregnated with the tape or its edge.

 In addition, the width or diameter of the reinforcing element may be less than the amount of overlap of the edges, while a double weld seam covers the reinforcing element on both sides.

 This removes any restrictions on the material of the reinforcing element, reduces the accuracy requirements for maintaining a stable step in winding the tape and reinforcing element in the manufacture of the sleeve, and provides the highest strength and density of the sleeve.

 The purpose of the invention in terms of the method is achieved by the fact that in the method of manufacturing the sleeve by spiral winding on the mandrel of the reinforcing element and the tape with the overlapping of its edges having a polymer material deposited on it, connecting them and removing the sleeve from the mandrel, according to the invention, the polymer material is applied to the tape at least on the width of the overlap of its edges, when winding the reinforcing element is laid on the edge of the last coil lying on the mandrel and covering it with the edge of the subsequent turn, and the connection of the edges estvlyayut by high frequency welding sleeve with the removal of the spiral protrusion formed reinforcing member.

 In this case, the reinforcing element is plastically bent before winding, giving it a residual curvature, the radius of which is 0.5-0.8 of the diameter of the mandrel. Smaller values in the indicated interval are used for the reinforcing element in the form of a wire spiral, and larger values are used for the polymer reinforcing element. This ensures the minimum values of stresses that are created in the sleeve during its manufacture, eliminates creep of the tape under tension, violation of the continuity of the weld, increases the strength and density of the sleeve.

 The purpose of the invention in terms of the device is achieved by the fact that the device, including means for feeding the tape, a cantilever drive cylinder-conical mandrel, a guiding apparatus tangentially located in relation to the mandrel and having a tray with a groove corresponding to the section of the tape and a guide roller, means for connecting and pressing the edges of the tape having at least one pinch roller, according to the invention is provided with means for supplying a reinforcing element, the means for connecting the edges is made in the form of a high-frequency welding a head having a concentrator, the concentrator, the guiding apparatus, the pressing means and the guiding roller have recesses corresponding to the cross section of the reinforcing element and are mounted with the possibility of forming sections of the spiral cavity evenly spaced around the mandrel, having a step equal to the winding pitch.

 In addition, the tray of the guide apparatus is made with a groove for supplying the reinforcing element, and the groove is located tangentially relative to the spiral cavity.

 In this case, the clamping means and the weld head are mounted on the swivel bracket and have means for adjusting the clamping force.

 The means for supplying the tape and the reinforcing element, the guiding apparatus, the pressing means and the guide rollers are mounted for rotation in a plane parallel to the axis of the mandrel.

 In addition, the means of supplying the reinforcing element is equipped with a mechanism for its plastic deformation before winding on the mandrel.

 In FIG. 1 shows a sleeve, partially in section; in FIG. 2 - on an enlarged scale, place 1 in FIG. 1; in FIG. 3 - an embodiment of the joint of adjacent turns forming a sleeve (place I in Fig. 1); in FIG. 4 - partially in section, a sleeve with a wire spiral reinforcing element; in FIG. 5 is an enlarged view of place II in FIG. 5; in FIG. 6 is a general view of a device for manufacturing a sleeve; in FIG. 7 is a section AA in FIG. 6; in FIG. 8, section BB in FIG. 7; in FIG. 9 is a section BB in FIG. 7; in FIG. 10 is an embodiment of a reinforcing element feeder.

 Sleeve 1 (see Fig. 1, 4) consists of turns of tape 2 made of fibrous woven or nonwoven material, wound in a spiral with overlapping edges of adjacent turns and a spiral reinforcing element 3 (see Fig. 2, 3, 5) located on overlap between the edges of adjacent turns of tape. To ensure a strong connection of the turns of the tape to each other, the edges of the tape, at least at the overlapping width (see Fig. 2, 3, 5), are impregnated with a thermoplastic polymer material and are interconnected by a double spiral weld 4 located on the overlap. The rest of the tape can be without impregnation, for example, for filter bags or be impregnated with the same composition as the edges of the tape, for example, for pipes of ventilation systems or protective bags. Due to such a sleeve design, high strength and density of the connecting element in the form of a double weld seated on the overlapping edges of the tape impregnated with thermoplastic polymer material, the sleeve strength is increased, and in the case of ventilation and other sleeves made of tape completely impregnated with thermoplastic polymer material , and their tightness.

 As a reinforcing element, a strip (see FIGS. 2, 3) of a polymeric material, for example, polypropylene, the thickness of which is 3-8 times greater than the thickness of the tape, and the cross-sectional area is 0.1-1.5 of the cross-sectional area of the tape, can be used. The strip, in turn, can be reinforced with synthetic fibers.

 The use of a reinforcing element in the form of a strip of polymer material increases the flexibility of the sleeve compared to a wire reinforcing element. Such a sleeve is less prone to folding, i.e., spontaneous closure of the turns along the axis of the sleeve and is preferable when used, for example, in exhaust ventilation systems of objects whose atmosphere contains acids or other substances that cause rapid corrosion of metal reinforcing elements.

 However, in the case of filter bags and, if necessary, to ensure a minimum flow rate of the tape, a wire spiral can be used as a reinforcing element (see Fig. 4, 5) with a wire diameter of 0.8-2.5 and an outer diameter of 1 -1.3 outer diameter of the sleeve.

 The lower values of the strip thickness and the outer diameter of the wire, as well as the cross-sectional area of the strip, are determined by the ability to provide satisfactory stiffness of the sleeve walls in the radial direction, which is especially important for the hoses of exhaust ventilation systems. The upper values are limited from the condition of ensuring the minimum weight of the sleeve. For filter bags, this also takes into account the need to ensure the maximum filtration surface, which uses the lower values of the diameter (width) of the reinforcing element, and therefore the size of the edge impregnated with thermoplastic material and the amount of overlap.

 From this point of view, as well as from the point of view of minimum tape consumption, the optimal design is the design of the sleeve, in which the width of the strip is equal to the width of the overlap (see Fig. 2). However, this design is possible only when using strips of the same polymeric material with which the tape is impregnated or the like, allowing the welding of strips and tapes between themselves. The width of the double weld is less than the width of the strip.

 A relatively narrow interval of the outer diameter of the wire spiral is determined by the fact that the thickness of the tape from which the sleeve is rolled is usually in the range of 0.2-0.5 mm and less often up to 0.1 mm. Such a sleeve without a reinforcing element is very easily deformed towards its axis and therefore the use of a wire spiral as the reinforcing element, the outer diameter of which is less than the diameter of the sleeve, leads to a loss of stability of the turns of the tape and a deterioration in the appearance and quality of the sleeve. The upper boundary of the outer diameter of the wire spiral is limited by the fact that, with excessive tape tension caused by elastic deformation of the wire spiral during winding and welding of the sleeve, the strength of the weld, especially at the time of manufacture of the sleeve, can be violated, as well as plastic deformation (creep) of the tape under the action of radial load from the side of an elastically deformed wire spiral. The consequence of this creep can be a shape violation due to uneven deformation of various sections of the sleeve and increased stresses in the tape, which can lead to loss of strength and premature failure of the sleeve.

 If the sleeve is not required to provide the maximum filtration surface (ventilation and other sleeves), it is preferable to design the sleeves (see Figs. 3 and 5), in which the width or diameter of the reinforcing element is less than the overlap of the edges, and the double weld covers the reinforcing element on both sides. This design does not impose any restrictions on the material of the reinforcing element, provides the best value for the strength and density of the sleeve, reduces the accuracy requirements for maintaining a stable step of winding the tape and reinforcing element in the manufacture of the sleeve.

 The sleeve of the construction described above, due to the low stiffness of the tape, has great flexibility, which allows it to be used for suction of harmful gaseous, abrasive and other products released during welding, grinding, and other operations with mobile sources of harmful products. At the same time, due to the high stiffness of the reinforcing element 3, such a sleeve does not lose its stability when created inside its vacuum, and is also able to withstand excessive pressure, which makes it possible to use it in filtration systems.

 A method of manufacturing the sleeve described above consists in the fact that the reinforcing element 3 and the tape 2 from a woven or non-woven fibrous material - nylon, polyester, rayon, etc. - are wound onto a rotating mandrel in a spiral, and the tape is pre-impregnated at least at the edges thermoplastic polymer material. The impregnation is carried out either in the process of manufacturing the sleeve immediately before winding the tape onto the mandrel, or previously, using the already impregnated tape when winding. Laying the tape and the reinforcing element during winding is carried out simultaneously, while the reinforcing element is laid on the edge of the last tape loop lying on the mandrel and covered with the edge of the subsequent turn. As winding, adjacent coils are continuously welded by ultrasonic high-frequency welding simultaneously with two welds located on the overlap along the edges of the reinforcing element (see Fig. 2), or on both sides of it (see Fig. 3 and 5).

The impregnation is carried out via the tape calender at a temperature of 110-140 ^{° C} prior to the winding process or simultaneously therewith. The ribbon on the mandrel in the manufacture of the sleeve is wound with overlap, the value of which is equal to or greater than the width of the reinforcing element. In order to provide the required stiffness of the sleeve in the radial direction, it is preferred to use a reinforcing element made of a more rigid polymer material than that used to impregnate the tape, for example, polypropylene reinforced with synthetic fibers, or in the form of a wire spiral. It is advisable to use the above values of the thickness and width of the polymer strip used as a reinforcing element.

 Before winding onto the mandrel, the reinforcing element, especially the wire, is plastically bent, giving it a residual curvature, the radius of which is 0.5-0.8 of the diameter of the mandrel. This eliminates excessive residual stresses in the tape after the manufacture of the sleeve, which can lead to disruption of the continuity of the weld, especially immediately after welding, as well as deformation of the tape and sleeve caused by the flow of the polymer material under tension. In this case, the upper limits of the above ratio are mainly used for polymer plastic material, and the lower ones for wire.

 For the manufacture of a spiral, a wire of high-quality high-carbon steel (50, 60, 65 G) with a diameter of 0.8-2.5 mm is used, and the diameter of the wire is usually chosen to be equal to 0.5-1% of the diameter of the sleeve. Preliminary plastic bending of the reinforcing element can be made both before winding the sleeve, and in the process of winding.

 To ensure continuous removal of the finished sleeve from the mandrel and thereby make it continuous, which increases productivity and allows you to get a sleeve of any length, 1-3 turns of tape are simultaneously placed on the mandrel, and after welding the edges of the tape, the sleeve is continuously removed from the sleeve when the mandrel is rotated behind the spiral protrusion of the sleeve formed by the reinforcing element. In this case, as will be further shown in the description of the device, this is carried out using a stationary spiral cavity formed by individual elements of the device, interacting with the said spiral protrusion and creating axial force, pulling the sleeve from the mandrel.

 A device (see Fig. 6, 7) for implementing the method of manufacturing the sleeve described above includes a drive mandrel 5 for spiral winding of the tape, cantilever mounted in the bearing support 6 of the bed 7.

 The tape is wound onto a cylindrical section of the mandrel. To facilitate removal of the sleeve from the mandrel, part of the mandrel in the direction of removal is made conical with a small taper angle. The mandrel is rotated by the drive 8. The means for feeding the tape - feeder 9 and the means for feeding the reinforcing element - feeder 10 are located on the platform 11, mounted for rotation in a plane parallel to the axis of the mandrel 5. Above it, it is cantilevered for rotation in a plane parallel to the axis of this mandrel 5, and moving in the direction to the axis of the mandrel and away from it, means for connecting the edges of adjacent turns of tape, made in the form of a welding ultrasonic high-frequency head 12 having centralizer 13, on the working surface of which there is a recess 14 (see Fig. 9), corresponding to the profile and cross-sectional dimensions of the reinforcing element. The dimensions of the recess in the hub 13 are determined taking into account the cross-sectional dimensions of the reinforcing element, the thickness of the tape and the necessary gaps, taking into account possible size deviations, as well as the deformation of the polymer material in the weld area.

 A guide apparatus 15 is installed in front of the head 12, including a tray 16 tangentially located relative to the mandrel and connected to the rotary platform 11. The inner channel 17 of the tray 16 (see Fig. 9) is made across the width of the tape, and the recess 18 for guiding the reinforcing element is located relative to the side the edges of the tray and tape in the same way as it should after winding the tape and the reinforcing element on the mandrel 5. Inside the tray 16 includes a spring-loaded element 19, made, for example, in the form of a rotary cylinder and providing adjustable tape tension during winding, as well as additional fixation of the reinforcing element in the recess 18.

 Behind the hub 13 (see FIGS. 6 and 7) of the welding head 12, there is installed a means for pressing adjacent turns of tape when they are connected, made in the form of at least one spring-loaded roller 20 mounted together with the welding head 13 on a swing-out swivel bracket 21 equipped with means 22 for regulating the force of the clamping of the concentrator to the tape when welding the sleeve. This tool can be made, for example, in the form of a lever with a moving load, springs with adjustable compression, etc. The base 23 of the bracket is also mounted on the platform 11 and, thus, when it is rotated, both the concentrator and the pressure roller can rotate together with the feeders 9 and 10 and the guide apparatus 15 in a plane parallel to the axis of the mandrel, and set in accordance with the winding pitch and the angle of elevation of the helix of the welded edges of the tape. The roller 20 has an annular recess 24, the cross-sectional dimensions of which correspond to the cross-sectional dimensions of the reinforcing element and which is shifted together with the roller 20 along the axis of the mandrel 5 relative to the recess in the hub 13 by an amount proportional to the winding pitch and the angular displacement of the roller 20 relative to the concentrator 13 along the cylindrical surface of the mandrel.

 At least one more spring-loaded guide roller 25 having an annular recess 26, the dimensions of which are similar to the recess of the roller 20, and shifted along the axis of the mandrel 18 relative to the roller 20 by an amount proportional to the winding pitch and the angular displacement of the roller 25 relative to the rotary platform 11 are installed 20 roller (i.e. half step). With the indicated location of the hub 13, the pressure roller 20 and the guide roller 25, the centers of the section of their recesses by planes passing through the axis of the mandrel and the axis of the corresponding roller lie on a helical line, the step of which is equal to the winding step, and the axis of the recess 18 in the tray 16 is tangent to this screw lines. With this arrangement of the hub 13, the pressure roller 20 and the guide roller 25, the sections of their recess facing the mandrel form sections of a spiral coil depression having a step equal to the winding pitch. Along the same spiral depression, additional guide rollers can be installed if necessary.

 Thanks to the installation of the tray 16 together with the feeders 9 and 10 on the rotary platform 11 with the possibility of rotation in a plane parallel to the axis of the mandrel, the feed angle of the tape and the reinforcing element is also regulated depending on the required winding pitch.

 The means of supplying the reinforcing element 9 can be additionally equipped (see Fig. 10) with a mechanism 27 for preliminary plastic deformation of the reinforcing element before winding it on the mandrel, made, for example, in the form of a coil whose diameter is less than the diameter of the mandrel or three rollers 28, 29 and 30, the rotation axes of which are parallel to each other, and the middle roller 29 is mounted for movement in a direction perpendicular to the plane in which the axes of the two extreme rollers 28 and 30 lie. This movement can be achieved using w, for example, a screw device 31. The amount of movement determines the amount of plastic deformation of the reinforcing member before it is wound on the mandrel. By controlling this value, the above values of the residual curvature of the reinforcing element before it is wound onto the mandrel can be provided. The mechanism 27 of preliminary plastic deformation of the reinforcing element can be installed independently of the device. In this case, the reinforcing spiral is pre-wound on the coil of the means for supplying the reinforcing element.

 Like the mechanism of preliminary plastic deformation of the reinforcing element, the means for impregnating the tape or the edge of the tape with a thermoplastic material can also be part of the device for manufacturing the sleeve and be independent of it. However, the preliminary impregnation of the tape outside the device and the preliminary plastic deformation of the reinforcing element immediately before winding were found to be most preferable.

 Example of the method and a description of the operation of the device.

Tape 40 mm wide and 0.30 mm thick polyester fabric previously impregnated with a calender, the rolls of which are heated to a temperature of 130 ^{° C} the thermoplastic polymeric material - PVC slurry according to GOST 14332-78. Before impregnation polyvinylchloride was heated to a temperature of ¹²⁰ ° C and mixed with 3% diaktilftalata GOST 8729-88 and 0.5% barium stearate brand C-17 TU 6-09-4803-79.

After cooling and subsequent winding, the feeder 9 with a tape impregnated with a thermoplastic polymer material, the composition of which is indicated above, is installed on the rotary platform 11 of the device for winding the sleeves. There, a feeder 10 is installed with a polypropylene tape with a cross section of 1.5 x 5 mm, which is used as a reinforcing element. Before the start of the winding rotation base 11 is set hub 13, the guide unit 15, rollers 20 and 25 at an angle of ⁵ °, to the axis of the mandrel (this angle corresponds to the lead angle helix at a pitch of winding of 31 mm and a diameter of 125 mm mandrel) and then shifting their in a horizontal plane along the axis of the mandrel 5, a hub 13 and rollers 20 and 25 are installed and fixed by the calculated value or by a template so that the centers of the recesses on their working surface with a section of 2.1 x 5.9 mm are located along a common helix with a step of 31 mm

 First, the tape from the feeder 9 and the reinforcing element from the feeder 10 are fed into the corresponding recesses 18 of the tray 16 and through them to the mandrel 5, are fixed on the mandrel and the edge is lowered onto the hub 13 of the welding head 12 and the rollers 20 and 25, leaving an edge element on both sides of the reinforcing element a strip of tape 2.5 mm wide on each side, pressed against the mandrel by the flanges of the rollers 20 and 25 and the protrusions of the hub 13. After that, the ultrasonic vibrations generator (not shown) is turned on and the mandrel is slowly rotated, guiding the manually formed protrusion from the army a cutting element with a width of 5.6 mm and a height of 1.8 mm in the recesses of the pressure roller and guide rollers.

 After the protrusion has passed all the guide rollers, they begin the process of continuous winding and welding of the sleeve. The process is conducted at a rotational speed of the mandrel of 2 rpm. Welding is carried out with the following parameters - the frequency of ultrasonic vibrations is 23 kHz, the power is 120 W, and the continuously wound and welded sections of the sleeve are continuously removed from the mandrel by the spiral protrusion of the sleeve formed by the reinforcing element. The axial force required for removal is created due to the interaction of the rotating spiral protrusion of the sleeve with the sections of the stationary spiral depression. These areas are recesses in the hub, pressure roller, and guide rollers. The number of guide rollers is determined by the diameter of the formed sleeve, however, for the most common sleeves with a diameter of 100-250 mm, it is sufficient to have no more than 1-3 guide rollers.

 After welding the sleeve of the required length with a cutting device (not shown), it is cut off either during the rotation of the mandrel or when it stops, after which the process continues, a new piece of the sleeve of the required length is welded, etc., until the tape and reinforcing element are used up after which all the operations described above are repeated or the tape and the reinforcing element from the new feeders are joined with the previous ones and the process continues.

 The continuity of the sleeve manufacturing process on this device favorably affects the stability of the parameters, the quality and productivity of manufacturing lightweight, durable and flexible folding sleeves of unlimited length.

 (56) U.S. Patent No. 4,203,476, cl. 138-122, 1980.

 USSR author's certificate N 1260238, cl. B 29 D 23/22, 1980.

 USSR author's certificate N 513606, cl. B 29 C 53/72, 1975.

Claims (12)

 1. A sleeve consisting of turns of tape, wound in a spiral with overlapping edges, and a spiral reinforcing element located between the edges of adjacent turns of tape, characterized in that the tape at least at the width of the overlap is impregnated with thermoplastic material, and adjacent turns of tape are connected between themselves a double spiral weld located on the ceiling.  2. The sleeve according to claim 1, characterized in that the reinforcing element is made in the form of a strip of polymeric material, the cross-sectional area of which is 0.6 - 1.5 of the cross-sectional area of the tape, and the thickness is 3 to 8 times the thickness of the tape.  3. The sleeve according to claim 1, characterized in that the reinforcing element is made in the form of a wire spiral with a wire diameter of 0.8 - 2.5 mm and an outer diameter in the free state of 1 - 1.3 of the outer diameter of the sleeve.  4. The sleeve according to claim 2, characterized in that the width of the strip is equal to the width of the overlap.  5. Sleeve according to claims 1 to 3, characterized in that the width or diameter of the reinforcing element is less than the amount of overlap of the edges, and a double weld seam covers the reinforcing element on both sides.  6. A method of manufacturing a sleeve by spiral winding onto the mandrel of the reinforcing element and the tape with the overlapping of its edges having polymer material deposited on it, their connection and removal of the sleeve from the mandrel, characterized in that, in order to increase productivity and expand technological capabilities, applying polymer material on the tape is carried out at least to the width of the overlap of its edges, when winding the reinforcing element is laid on the edge of the last coil lying on the mandrel and cover it with the edge of the subsequent vi ka, and the compound of edges is performed by high-frequency welding with the removal sleeve of the spiral protrusion formed reinforcing member.  7. The method according to p. 6, characterized in that the reinforcing element before winding is plastically bent, giving it a curvature, the radius of which is 0.5 to 0.8 of the diameter of the mandrel.  8. A device for the manufacture of a sleeve, including means for feeding the tape, a cantilever, drive cylinder-conical mandrel, a guiding apparatus tangentially located in relation to the mandrel and having a tray with a groove corresponding to the section of the tape, and a guiding roller, means for connecting and pressing the edges of the tape, having at least one pinch roller, characterized in that, in order to improve the quality of the sleeve and expand the technological capabilities of the device, it is provided with means for supplying a reinforcing element, means for To connect the edges, it is made in the form of a high-frequency welding head having a concentrator, wherein the concentrator, guiding apparatus, clamping means and guiding roller have recesses corresponding to the section of the reinforcing element and are installed with the possibility of forming sections of a spiral cavity evenly spaced around the mandrel, having a pitch, equal to the winding pitch.  9. The device according to p. 8, characterized in that the tray of the guide apparatus is made with a groove for supplying a reinforcing element, the groove being located tangentially relative to the spiral cavity.  10. The device according to paragraphs. 8 and 9, characterized in that the clamping means and the welding head are mounted on the swivel bracket and have means for adjusting the clamping force.  11. The device according to paragraphs. 8 - 10, characterized in that the means of supplying the tape and the reinforcing element, the guide apparatus, the clamping means and the guide rollers are mounted for rotation in a plane parallel to the axis of the mandrel.  12. The device according to paragraphs. 9 to 11, characterized in that the means of supplying the reinforcing element is provided with a mechanism for its plastic deformation before winding onto the mandrel.

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